RESUMO
Mixtures of cellulose acetate (M.W. â¼3â¯×â¯104â¯g/mol) dissolved in 75% v/v acetic acid in water (17% w/w) and ground anatase titania particles with diameters of 197⯱â¯75â¯nm (0%, 5% and 10% w/w) were electrospun at 17â¯kV with a fiber collection distance and a feed rate of 10â¯cm and 0.6â¯mL/h. Then, the fiber was treated with 0.5â¯M potassium hydroxide in ethanol. Rough regenerated cellulose (RC)-titania separators with diameters of â¼310â¯nm and uniformly dispersed titania particles showed â¼78% porosities. They decomposed at 300⯰C, higher than the decomposition temperature of polyethylene separators (220⯰C). Added titania particles increased the electrolyte wettability and lithium transference number (from 0.22 to 0.62). RC - 10% titania separator retained the capacity with 79â¯mAâ¯h/g after 30 cycles and had excellent discharge capacity. These fascinating properties make RC-titania separator promising for lithium ion battery.